/// <summary>
/// 予約語(<c>true</c>, <c>false</c>, <c>null</c>)をパースします。<see cref="Parse(JsonScanner)" />で使用されます。
/// </summary>
/// <param name="scanner">指定するスキャナ。</param>
/// <returns>予約語をそのまま返します。</returns>
private static object ParseWord(JsonScanner scanner)
{
if (scanner.Check(IsSmallT))
{
if (!scanner.CheckAdvance("true"))
{
throw new ArgumentMapParseException("word -> true required", scanner.Itext.PositionInfo);
}
return(true);
}
if (scanner.Check(IsSmallF))
{
if (!scanner.CheckAdvance("false"))
{
throw new ArgumentMapParseException("word -> false required", scanner.Itext.PositionInfo);
}
return(false);
}
if (!scanner.Check(IsSmallN))
{
throw new ArgumentMapParseException("word -> unexpected character", scanner.Itext.PositionInfo);
}
if (!scanner.CheckAdvance("null"))
{
throw new ArgumentMapParseException("word -> null required", scanner.Itext.PositionInfo);
}
return(null);
}
/// <summary>
/// 配列をパースします。これは<see cref="Parse(JsonScanner)" />や一部のメソッドで使用されます。
/// </summary>
/// <param name="scanner">指定するスキャナ。</param>
/// <returns>パースに成功した場合<see cref="object" />の配列を返します。 <br />
/// 何かの配列として利用するにはその他の処理が必要です。</returns>
private static object[] ParseArray(JsonScanner scanner)
{
var osList = new List <object>();
if (!scanner.CheckAdvance(IsLeftBracket))
{
throw new ArgumentMapParseException("array -> left bracket required", scanner.Itext.PositionInfo);
}
ParseWhitespace(scanner);
if (scanner.CheckAdvance(IsRightBracket))
{
return(osList.ToArray());
}
while (true)
{
osList.Add(ParseValue(scanner));
ParseWhitespace(scanner);
if (scanner.CheckAdvance(IsRightBracket))
{
return(osList.ToArray());
}
if (!scanner.CheckAdvance(IsComma))
{
throw new ArgumentMapParseException("array -> comma required", scanner.Itext.PositionInfo);
}
ParseWhitespace(scanner);
}
}
public void Dispose()
{
if (m_Scanner != null)
{
m_Scanner.Dispose();
m_Scanner = null;
}
}
public void TestMissingClosingSlash(string jsonRegex)
{
var buffer = new JsonBuffer(jsonRegex);
var exception = Record.Exception(() => JsonScanner.GetNextToken(buffer));
Assert.IsType <FormatException>(exception);
Assert.StartsWith("Invalid JSON regular expression", exception.Message);
}
public TableEntityReader(string json)
{
if (string.IsNullOrEmpty(json))
{
throw new ArgumentException("json");
}
scanner = new JsonScanner(json);
state = TableEntityReaderState.Initial;
}
/// <summary>
/// 今までのパース引数を構文解析と共にまとめます。
/// </summary>
/// <param name="scanner">指定するスキャナ。</param>
/// <returns>objectとして<see cref="Parse(JsonScanner)" />に渡します。</returns>
private static object ParseValue(JsonScanner scanner)
{
ParseWhitespace(scanner);
return(scanner.Check(IsLeftBrace) ? ParseObject(scanner) :
scanner.Check(IsLeftBracket) ? ParseArray(scanner) :
scanner.Check(IsDoubleQuote) ? ParseString(scanner) :
scanner.Check(IsSign) ? ParseNumber(scanner) :
scanner.Check(IsDigit) ? ParseNumber(scanner) : ParseWord(scanner));
}
public void TestValueSeparator()
{
var json = "\t ,x";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.Comma, token.Type);
Assert.AreEqual(",", token.Lexeme);
Assert.AreEqual('x', buffer.Read());
}
public void TestOneExponentTwelve()
{
var json = "\t 1e12,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.Equal(JsonTokenType.Double, token.Type);
Assert.Equal("1e12", token.Lexeme);
Assert.Equal(',', buffer.Read());
}
public void TestEndObject()
{
var json = "\t }x";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.Equal(JsonTokenType.EndObject, token.Type);
Assert.Equal("}", token.Lexeme);
Assert.Equal('x', buffer.Read());
}
public void TestMinusZeroPointZero()
{
var json = "\t -0.0,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.Equal(JsonTokenType.Double, token.Type);
Assert.Equal("-0.0", token.Lexeme);
Assert.Equal(',', buffer.Read());
}
public void TestMinusOne()
{
var json = "\t -1,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.Equal(JsonTokenType.Int32, token.Type);
Assert.Equal("-1", token.Lexeme);
Assert.Equal(',', buffer.Read());
}
public void TestNull()
{
var json = "\t null,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.Equal(JsonTokenType.UnquotedString, token.Type);
Assert.Equal("null", token.StringValue);
Assert.Equal(',', buffer.Read());
}
public void TestBeginArray()
{
var json = "\t [x";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.Equal(JsonTokenType.BeginArray, token.Type);
Assert.Equal("[", token.Lexeme);
Assert.Equal('x', buffer.Read());
}
public void TestUndefined()
{
var json = "\t undefined,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.UnquotedString, token.Type);
Assert.AreEqual("undefined", token.StringValue);
Assert.AreEqual(',', buffer.Read());
}
public void TestNameSeparator()
{
var json = "\t :x";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.Equal(JsonTokenType.Colon, token.Type);
Assert.Equal(":", token.Lexeme);
Assert.Equal('x', buffer.Read());
}
public void TestEndArray()
{
var json = "\t ]x";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.EndArray, token.Type);
Assert.AreEqual("]", token.Lexeme);
Assert.AreEqual('x', buffer.Read());
}
public void TestRegularExpressionEmpty()
{
var json = "\t //,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.RegularExpression, token.Type);
Assert.AreEqual("//", token.Lexeme);
Assert.AreEqual(',', buffer.Read());
}
public void TestRegularExpressionPatternAndOptions()
{
var json = "\t /pattern/imxs,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.RegularExpression, token.Type);
Assert.AreEqual("/pattern/imxs", token.Lexeme);
Assert.AreEqual(',', buffer.Read());
}
public void TestMinusOnePointTwo()
{
var json = "\t -1.2,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.Double, token.Type);
Assert.AreEqual("-1.2", token.Lexeme);
Assert.AreEqual(',', buffer.Read());
}
public void TestMinusZeroExponentMinusTwelve()
{
var json = "\t -1e-12,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.Double, token.Type);
Assert.AreEqual("-1e-12", token.Lexeme);
Assert.AreEqual(',', buffer.Read());
}
public void TestZeroExponentOne()
{
var json = "\t 0e1,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.Double, token.Type);
Assert.AreEqual("0e1", token.Lexeme);
Assert.AreEqual(',', buffer.Read());
}
public void TestBeginObject()
{
var json = "\t {x";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.BeginObject, token.Type);
Assert.AreEqual("{", token.Lexeme);
Assert.AreEqual('x', buffer.Read());
}
public void TestEndOfFile()
{
var json = "\t ";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.EndOfFile, token.Type);
Assert.AreEqual("<eof>", token.Lexeme);
Assert.AreEqual(-1, buffer.Read());
}
public void TestTwelve()
{
var json = "\t 12,";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.Int32, token.Type);
Assert.AreEqual("12", token.Lexeme);
Assert.AreEqual(',', buffer.Read());
}
public void TestUnquotedString()
{
var json = "\t name123:1";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.UnquotedString, token.Type);
Assert.AreEqual("name123", token.StringValue);
Assert.AreEqual(':', buffer.Read());
}
public void TestEmptyString()
{
var json = "\t \"\"x";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.Equal(JsonTokenType.String, token.Type);
Assert.Equal("", token.StringValue);
Assert.Equal('x', buffer.Read());
}
public void TestEscapeSequences()
{
var json = "\t \"x\\\"\\\\\\/\\b\\f\\n\\r\\t\\u0030y\"x";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.String, token.Type);
Assert.AreEqual("x\"\\/\b\f\n\r\t0y", token.StringValue);
Assert.AreEqual('x', buffer.Read());
}
public void Test3CharacterString()
{
var json = "\t \"123\"x";
var buffer = new JsonBuffer(json);
var token = JsonScanner.GetNextToken(buffer);
Assert.AreEqual(JsonTokenType.String, token.Type);
Assert.AreEqual("123", token.StringValue);
Assert.AreEqual('x', buffer.Read());
}
/// <summary>
/// Json値の入れ子となるオブジェクトをパースします。<see cref="Parse(JsonScanner)" />の一部で使用されます。
/// </summary>
/// <param name="scanner">指定するスキャナ。</param>
/// <returns><see cref="string" />にキー値を代入してハッシュマップで返します。</returns>
private static Dictionary <string, object> ParseObject(JsonScanner scanner)
{
var osDict = new Dictionary <string, object>();
if (!scanner.CheckAdvance(IsLeftBrace))
{
throw new ArgumentMapParseException("object -> left brace required", scanner.Itext.PositionInfo);
}
ParseWhitespace(scanner);
if (scanner.CheckAdvance(IsRightBrace))
{
return(osDict);
}
while (true)
{
var key = ParseString(scanner);
if (osDict.Keys.Contains(key))
{
throw new ArgumentMapParseException("object -> same key", scanner.Itext.PositionInfo);
}
ParseWhitespace(scanner);
if (!scanner.CheckAdvance(IsColon))
{
throw new ArgumentMapParseException("object -> colon required", scanner.Itext.PositionInfo);
}
ParseWhitespace(scanner);
osDict[key] = ParseValue(scanner);
ParseWhitespace(scanner);
if (scanner.CheckAdvance(IsRightBrace))
{
return(osDict);
}
if (!scanner.CheckAdvance(IsComma))
{
throw new ArgumentMapParseException("object -> comma required", scanner.Itext.PositionInfo);
}
ParseWhitespace(scanner);
}
}
private JsonScanner GetTokenizer()
{
MemoryStream ms = new MemoryStream();
StreamWriter sw = new StreamWriter(ms);
sw.Write(textJson.Text);
sw.Flush();
ms.Position = 0;
JsonScanner tokenizer = new JsonScanner();
tokenizer.SetInput(new StreamReader(ms));
return(tokenizer);
}
